I like Dostoyevsky and enjoyed many of his books but the Brothers in my opinion is just badly written: long and self-repetitive. It has moments of clarity and beauty like the The Grand Inquisitor novel or the discussion in the monastery, and ideas in the book are compelling but boy it's an ordeal to get to them. So my advice: if you want try Dostoyevsky please don't start with "the masterpiece", pick any other book of his. Crime and Punishment, the Idiot or short novels like The Gambler are a good start. You can get to the Brothers later if you chose to.

Another thought I had been having when reading the book was that Dostoyevsky uses insanity and especially insanity caused by stress way too often, it's a major plot device in his books while it's so rare in real life. However now I observe many of my friends (especially single ones) slowly going insane in various ways and I don't anymore think that it's rare. I guess mental health becomes scarce as you get older just like the physical health, just didn't expect this to manifest itself around the age of 35.